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Posted By: John O'Hagan
Date: Wednesday, 15 April 2026, at 5:21 p.m.

In Response To: How to play the last ace? (John O'Hagan)

Slightly better to kill 6s and come to the 23-pt with the last ace. After that play, you'll have 11 numbers to escape, 7 that break a point in your board (44,43,42,33,22), and 18 that don't escape and don't break an inner board point. If you instead play 6/5 with the last ace, you'll have 13 ways to escape, 16 that break a point in your board (the 7 bad 5s plus 44,43,42,33,32,22), and 7 that don't escape and don't break. So playing the last ace to the 23-pt allows you to escape before breaking an inner board point 11/36 plus 30% of the 16 neutral numbers for a total of ~15.8 out of 36. Playing 6/5 lets you escape 13/36 + ~35% of 7 for a total of ~15.45/36.





White is Player 2

score: 0
pip: 89
Unlimited Game
Jacoby Beaver
pip: 76
score: 0

Blue is Player 1
XGID=-CBB-DC-------b-ab-bcbb-aA:1:1:1:11:0:0:3:0:10
Blue to play 11

1.Rollout1Bar/24* 24/23 5/4(2)eq: +0.780
Player:
Opponent:		65.82% (G:25.75% B:0.11%)
34.18% (G:3.54% B:0.10%)		Conf.: ± 0.002 (+0.778...+0.783) - [99.6%]
Duration: 20 minutes 34 seconds
2.Rollout1Bar/24* 6/4 5/4eq: +0.775 (-0.005)
Player:
Opponent:		66.12% (G:25.02% B:0.11%)
33.88% (G:2.79% B:0.08%)		Conf.: ± 0.003 (+0.773...+0.778) - [0.4%]
Duration: 19 minutes 36 seconds
1 31104 Games rolled with Variance Reduction.
First 12 moves: 3-ply, cube decisions: XG Roller
Remaining moves: 3-ply Red, cube decisions: 4-ply
Search interval: Large

eXtreme Gammon Version: 2.10

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